const typeByDomain = {
    org: 'organization',
    com: 'commercial',
    net: 'network',
    info: 'information'
}

function domainType(domains) {
    return domains.map(domain => {
        const [topLevel] = domain.split('.').reverse()
        
        return typeByDomain[topLevel]
    })
}


/**
* Test Suite 
*/
describe('domainType()', () => {
    it('returns list of domain types', () => {
        // arrange
        const domains = ["en.wiki.org", "codefights.com", "happy.net", "code.info"];
        
        // act
        const result = domainType(domains);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toEqual(["organization", "commercial", "network", "information"]);
    });
});